As power plants modernize, crane reliability and safety increasingly depend on accurate displacement feedback. Traditional imported non-contact LVDT displacement sensors are precise, but long lead times, high costs, and supply risks create maintenance pressure. A domestic import substitute offers a practical alternative for power plant cranes without compromising performance. The replacement sensor uses a non-contact LVDT design to measure boom, hoist, and trolley movement with high linearity and repeatability. It resists vibration, dust, oil mist, and electromagnetic interference common in boiler rooms, turbine halls, and coal handling areas. Stainless-steel housing and sealed connectors support continuous duty in harsh environments. Key benefits include faster spare-part delivery, lower total cost, easier technical support, and reduced dependence on overseas supply chains. The sensor can be calibrated to match original signal outputs, making retrofit simple for existing crane control systems. It supports 4-20 mA, 0-10 V, or RS485 output options and broad temperature ranges. Engineered for low drift and long service life, it also reduces calibration frequency and maintenance workload. Before replacement, verify stroke, resolution, protection class, mounting dimensions, and EMC compatibility. Factory calibration and on-site commissioning help ensure smooth integration. With a qualified import substitute, power plant operators can improve crane safety, shorten downtime, and secure long-term spare-part availability.